SB Tactical, inventors of the original Pistol Stabilizing Brace, now produces the SOB (Son of Brace) which is a slimmer, skeletonized version of the original. It has an adjustable nylon stabilizing strap and a non-functional pistol buffer tube. The stock is manufactured from reinforced polymer materials. It is designed to match and enhance the aesthetics of AK type platforms.

The ATF has determined the pistol stabilizing brace was neither designed nor approved to be used as a shoulder stock, and therefore use as a shoulder stock constitutes a redesign of the device which alters its classification and subjects it to NFA (SBR) laws, meaning you need to register it and buy a $200 tax stamp to own it. Do Not install and use this brace as a shoulder stock.